The Central Bureau of Investigation (CBI), which is interrogating Kolkata Police Commissioner Rajeev Kumar in the Saradha and Rose Valley chit fund scams in Meghalaya's capital Shillong, is likely to move the Supreme Court, seeking permission to quiz Saradha Group Chairman Sudipta Sen and his close aide Debjani Mukherjee in connection with the chit fund case. The probe agency will further examine Kumar for another three to four days.